ED-E and Veronica are both gone, and I have no clue where they are. One minute they were following me, the next they were gone. The game still says the are my followers, because I cant recruit anyone else. Anybody have any solutions for this? (im on 360)

Check the last building you were in with them. This has happened to me several times and they usually end up staying in a building I exited (and they didn't) recently. I've lost them once or twice running around in the desert too and had to retrace my steps to find 'em.